Raman and luminescence spectra in the spin-Peierls system Cu1-xNixGeO3

Authors
Kuroe, H Kaneko, T Sekine, T Sarmago, RV Koide, N Masuda, T Tsukada, I Uchinokura, K
Citation
H. Kuroe et al., Raman and luminescence spectra in the spin-Peierls system Cu1-xNixGeO3, PHYSICA B, 284, 2000, pp. 1643-1644
Citations number
9
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
284
Year of publication
2000
Part
2
Pages
1643 - 1644
Database
ISI
SICI code
0921-4526(200007)284:<1643:RALSIT>2.0.ZU;2-9
Abstract
We have studied Raman and luminescence spectra of Cu1 - xNixGeO3. The appea rance of luminescence spectra in lightly Ni-doped samples suggests the form ation of impurity states in the charge-transfer gap. The folded phonon mode , the spin-Peierls gap mode, and the two-magnetic-excitation bound-state mo de, which are evidences of the spin-Peierls transition, have been observed in lightly Ni-doped samples, as well as in Zn- and Si-doped CuGeO3. (C) 200 0 Published by Elsevier Science B.V. All rights reserved.